Folding box.



1.]. JONES.

FOLDING BOX. APPLICATION FILED DEC. 10. 1913.

Patented June 8, 1915.

'ATENT onnron JOSHUA. J. JONES, 0F PITTSBUMH,,IPENNSYLVANIA, -ASSIGNOB 01B ONE-THIRD T0 BRABAZON RUTHERFOORD AND ONE-THIRD. TO CHAR ES P. TBIMBIIE, BOTH 01?.

PITTSBURGH, PENNSYLVANIA.

romaine Box.

Patented June 8, 1915.

Application filed December 10, 1913. Serial No. 805,728.

Tb all whom it may concern Be it known that I, JOSHUA J. JONES, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invente certain new and useful Improvements in Folding Boxes, of which the following is a specification.

My invention consists of animprovement in collapsible or folding boxes, cartons, packing cases, etc., of the class usually made of paper board and the like, in which the body portion of the box is made of a one piece blank, out and creased to provide interengaging and interlocking side and end portions.

The particular object of the present invention is to provide, in a box of this type, means for preventing connection of the connecting corner portions of the sides and ends, consisting of corner flaps cut out of the body portion of the "blank at the creased corners where the main connecting flap is bent around, adapted to engage the interfitting edge portion of the co-acting side or end member with which the main flap is otherwise connected, to hold it fixedly between such cut out corner flap and main flap to prevent displacement,

Preferred forms of shown in the accompanying drawings, in which:

Figure 1 is a perspective view of a box constructed according to my invention. Fig. 2 is an enlarged perspective detailview of the corner construction. Fig. 3 is'atransverse sectional view on Fig. 2. Fig. 4 is a view similarto Fig. 2 showin a plurality of the holding edge flaps. ig. 5 is a plan view of one of the corners of the blank for forming the box.

Ordinarily, in boxes or cases of this type, the sides and ends are merely connected by an interlocking joint between the bent terminals of the sides and ends, one of such members being creased at the corner line and projecting by an anchoring terminal around and through a slitted end portion of the coacting other portion, for merely holding the side and end together. No provision is made for retaining the edge of the inner member, unless it be by pasting, riveting, stitching, or the like, so that such edge portion is ordinarily free to shift or move displacement or (115- j the invention are.

the line III. III. of

' brought against such under the strains of use. This is ver ob+ jectionable in that it frequently resu ts in loosening or disconnection of the slit joint, causin opening or collapsing of the box, especia ly where the contents exert unequal pressure, as in the case of a laundry box and the like.

In the drawings I have shown a charace teristic construction in which the box body is formed of a one piece blank of paste board or other similar material having the middle bottom portion 2, the sides '3, 3, and ends 4, 4, cut out and bent upwardly and connected at their ends to provide the corner portions when erected to form the box structure. For such purpose the sides are creased along the lines a and the ends are creased along the lines I) of the blank, Fig. 5, the ends also being creased along the lines 0 for providing the end interlocking flaps 5 having the anchoring terminals 6, of any usual or suitable construction adapted to pass around the end portions of the sides 3 and through suitable slits 7 therein, as will be readily understood. The blank for such purpose is cut out in the manner indicated in the diagram, Fig. 5, it being understood that each corner portion is of corresponding shape. When the flap 5 is bent around the adjacent end of side 3, the edge 8 of the side fits inwardly against the corner angle formed by the crease 0, at which point it is desired to fixedly retain it against shifting. For such purpose the blank is punched out, as indicated at 9, providing a flap 10 with its base, considered as the distance between the two ends of the incision forming the said flap on the line 0.

corner and the flap 5 to embrace it outwardly, the punched out 'flap 10 neatly embraces against the inner portion of the edge of the side, thereby fixedly retaining it in position in the corner.

The flap 10 being bent backwardly, has a normal pressure against the inner side of the edge 8 of the side, overcoming any tendency to bend the flap backwardly, and insuring its retention.

If desired, a plurality of the supplemental flaps 10 may be provided, as indicated in Fig. 4, depending upon the size and depth of the box, or for the purpose of more securely reinforcing and bracing the edge portions of the sides within the corners.

When the edge 8 is I It will be understood that the supplemental holdin flaps 10 may be utilized in connection Wit any desired construction of box as to the main corner joint otherwise than as shown and described, and I do not desire to be limited to such construction. Also that various other changes or modifications ma be made in the design, proportions or 0t or features of the invention by the skilled sco e of the followin claims.

l li hat I claim is: g

1. A box formed of a continuous blank of flexible material having bent up side and end flange members, one of said flange members-at each corner of said box having an extension forming a corner piece adapted to extend around the full height of the adjacent flange, a locking portion on said extension adapted to engage a slot in said adjacent flange, and a flap lock struck out from one of said flange members and adapted to bear against the end ed e of one of said flange members whereby t e locking portion mechanic, but that all suchchanges are to be considered as within the is prevented from extending into said slot farther than its normal locking position.

2. A box formed of a continuous blank of flexible material having bent up side and end flanges, one of said flanges at each corner of said box having an extension forming a corner piece and adapted to extend around the full height of the adjacent flange, a locking portion on said extension and engaging with a slot in said adjacent flange, and a locking flap struck out from one of saidflanges and lying entirely within the said flange and cooperating with the end portion of one of said flanges whereby the flange is prevented from creeping beyond the corner of said box, said flap lock having its base in a line substantially perpendicular to the crease between the side flanges and the bottom of the box.

In testimon whereof I hereunto afi'lx my signature in t e presence of two witnesses.

JOSHUA J. JONES. Witnesses:

O. M. CLARKE, FREDK. STAUB. 

